List of Articles یادگیری جمعی Open Access Article Abstract Page Full-Text 1 - Stock portfolio optimization based on the combined model of omega ratio and mean-variance Markowitz based on two-level ensemble machine learning sanaz faridi Mahdi Madanchi Zaj amir daneshvar shadi shahverdiani fereydoon rahnama 10.30495/jfksa.2022.21083 Open Access Article Abstract Page Full-Text 2 - Designing a multi agent credit scoring System applying ensemble learning Ahmad Ghodselahi Hamidreza Naji Ashakan Amir madhi Open Access Article Abstract Page Full-Text 3 - Presenting financial bankruptcy risk prediction model of stock and transborder companies using machine learning algorithms Mohsen Aali Seyed Alireza Mirarab Baygi Nima Farajian Open Access Article Abstract Page Full-Text 4 - Development a new ensemble learning approach for stock portfolio selection using multiclass SVM and genetic algorithm nasrin bagheri mazraeh amir Daneshvar mehdi madanchi zaj